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<meta name="description" content="装饰器模式  装饰器模式（Decorator Pattern）允许向一个现有的对象添加新的功能，同时又不改变其结构。这种类型的设计模式属于结构型模式，它是作为现有的类的一个包装。 这种模式创建了一个装饰类，用来包装原有的类，并在保持类方法签名完整性的前提下，提供了额外的功能。 我们通过下面的实例来演示装饰器模式的用法。其中，我们将把一个形状装饰上不同的颜色，同时又不改变形状类。  介绍 意图：动态地给一个对象添加一些额外的职责。就增加功..">
		
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			<h1>装饰器模式</h1>

<p>装饰器模式（Decorator Pattern）允许向一个现有的对象添加新的功能，同时又不改变其结构。这种类型的设计模式属于结构型模式，它是作为现有的类的一个包装。</p>
<p>这种模式创建了一个装饰类，用来包装原有的类，并在保持类方法签名完整性的前提下，提供了额外的功能。</p>
<p>我们通过下面的实例来演示装饰器模式的用法。其中，我们将把一个形状装饰上不同的颜色，同时又不改变形状类。</p>

<h2 class="tutheader">介绍</h2>
<p><b>意图：</b>动态地给一个对象添加一些额外的职责。就增加功能来说，装饰器模式相比生成子类更为灵活。</p>
<p><b>主要解决：</b>一般的，我们为了扩展一个类经常使用继承方式实现，由于继承为类引入静态特征，并且随着扩展功能的增多，子类会很膨胀。</p>
<p><b>何时使用：</b>在不想增加很多子类的情况下扩展类。</p>
<p><b>如何解决：</b>将具体功能职责划分，同时继承装饰者模式。</p>
<p><b>关键代码：</b>
1、Component 类充当抽象角色，不应该具体实现。
2、修饰类引用和继承 Component 类，具体扩展类重写父类方法。
</p> 
<p><b>应用实例：</b>
1、孙悟空有 72 变，当他变成"庙宇"后，他的根本还是一只猴子，但是他又有了庙宇的功能。
2、不论一幅画有没有画框都可以挂在墙上，但是通常都是有画框的，并且实际上是画框被挂在墙上。在挂在墙上之前，画可以被蒙上玻璃，装到框子里；这时画、玻璃和画框形成了一个物体。
</p>
<p><b>优点：</b>装饰类和被装饰类可以独立发展，不会相互耦合，装饰模式是继承的一个替代模式，装饰模式可以动态扩展一个实现类的功能。</p>
<p><b>缺点：</b>多层装饰比较复杂。</p>
<p><b>使用场景：</b>
1、扩展一个类的功能。
2、动态增加功能，动态撤销。
</p>
<p><b>注意事项：</b>可代替继承。</p>

<h2 class="tutheader">实现</h2>
<p>我们将创建一个 <i>Shape</i> 接口和实现了 <i>Shape</i> 接口的实体类。然后我们创建一个实现了 <i>Shape</i> 接口的抽象装饰类 <i>ShapeDecorator</i>，并把 <i>Shape</i> 对象作为它的实例变量。</p>
<p><i>RedShapeDecorator</i> 是实现了 <i>ShapeDecorator</i> 的实体类。<p><i>DecoratorPatternDemo</i> 类使用 <i>RedShapeDecorator</i> 来装饰 <i>Shape</i> 对象。</p>
<img decoding="async" src="https://www.runoob.com/wp-content/uploads/2014/08/20210420-decorator-1-decorator-decorator.svg" alt="装饰器模式的 UML 图" />
<h3>步骤 1</h3>
<p>创建一个接口：</p>

<div class="example"> 
<h2 class="example">Shape.java</h2> 
<div class="example_code">
<div class="hl-main"><span class="hl-reserved">public</span><span class="hl-code"> </span><span class="hl-reserved">interface</span><span class="hl-code"> </span><span class="hl-identifier">Shape</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
   </span><span class="hl-types">void</span><span class="hl-code"> </span><span class="hl-identifier">draw</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-brackets">}</span></div>
</div></div>
<h3>步骤 2</h3>
<p>创建实现接口的实体类。</p>

<div class="example"> 
<h2 class="example">Rectangle.java</h2> 
<div class="example_code">
<div class="hl-main"><span class="hl-reserved">public</span><span class="hl-code"> </span><span class="hl-reserved">class</span><span class="hl-code"> </span><span class="hl-identifier">Rectangle</span><span class="hl-code"> </span><span class="hl-reserved">implements</span><span class="hl-code"> </span><span class="hl-identifier">Shape</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
 
   @</span><span class="hl-identifier">Override</span><span class="hl-code">
   </span><span class="hl-reserved">public</span><span class="hl-code"> </span><span class="hl-types">void</span><span class="hl-code"> </span><span class="hl-identifier">draw</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
      </span><span class="hl-identifier">System</span><span class="hl-code">.</span><span class="hl-identifier">out</span><span class="hl-code">.</span><span class="hl-identifier">println</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">Shape: Rectangle</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">;
   </span><span class="hl-brackets">}</span><span class="hl-code">
</span><span class="hl-brackets">}</span></div>
</div></div>

<div class="example"> 
<h2 class="example">Circle.java</h2> 
<div class="example_code">
<div class="hl-main"><span class="hl-reserved">public</span><span class="hl-code"> </span><span class="hl-reserved">class</span><span class="hl-code"> </span><span class="hl-identifier">Circle</span><span class="hl-code"> </span><span class="hl-reserved">implements</span><span class="hl-code"> </span><span class="hl-identifier">Shape</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
 
   @</span><span class="hl-identifier">Override</span><span class="hl-code">
   </span><span class="hl-reserved">public</span><span class="hl-code"> </span><span class="hl-types">void</span><span class="hl-code"> </span><span class="hl-identifier">draw</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
      </span><span class="hl-identifier">System</span><span class="hl-code">.</span><span class="hl-identifier">out</span><span class="hl-code">.</span><span class="hl-identifier">println</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">Shape: Circle</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">;
   </span><span class="hl-brackets">}</span><span class="hl-code">
</span><span class="hl-brackets">}</span></div>
</div></div>
<h3>步骤 3</h3>
<p>创建实现了 <i>Shape</i> 接口的抽象装饰类。</p>

<div class="example"> 
<h2 class="example">ShapeDecorator.java</h2> 
<div class="example_code">
<div class="hl-main"><span class="hl-reserved">public</span><span class="hl-code"> </span><span class="hl-reserved">abstract</span><span class="hl-code"> </span><span class="hl-reserved">class</span><span class="hl-code"> </span><span class="hl-identifier">ShapeDecorator</span><span class="hl-code"> </span><span class="hl-reserved">implements</span><span class="hl-code"> </span><span class="hl-identifier">Shape</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
   </span><span class="hl-reserved">protected</span><span class="hl-code"> </span><span class="hl-identifier">Shape</span><span class="hl-code"> </span><span class="hl-identifier">decoratedShape</span><span class="hl-code">;
 
   </span><span class="hl-reserved">public</span><span class="hl-code"> </span><span class="hl-identifier">ShapeDecorator</span><span class="hl-brackets">(</span><span class="hl-identifier">Shape</span><span class="hl-code"> </span><span class="hl-identifier">decoratedShape</span><span class="hl-brackets">)</span><span class="hl-brackets">{</span><span class="hl-code">
      </span><span class="hl-reserved">this</span><span class="hl-code">.</span><span class="hl-identifier">decoratedShape</span><span class="hl-code"> = </span><span class="hl-identifier">decoratedShape</span><span class="hl-code">;
   </span><span class="hl-brackets">}</span><span class="hl-code">
 
   </span><span class="hl-reserved">public</span><span class="hl-code"> </span><span class="hl-types">void</span><span class="hl-code"> </span><span class="hl-identifier">draw</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-brackets">{</span><span class="hl-code">
      </span><span class="hl-identifier">decoratedShape</span><span class="hl-code">.</span><span class="hl-identifier">draw</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
   </span><span class="hl-brackets">}</span><span class="hl-code">  
</span><span class="hl-brackets">}</span></div>
</div></div>
<h3>步骤 4</h3>
<p>创建扩展了 <i>ShapeDecorator</i> 类的实体装饰类。</p>

<div class="example"> 
<h2 class="example">RedShapeDecorator.java</h2> 
<div class="example_code">
<div class="hl-main"><span class="hl-reserved">public</span><span class="hl-code"> </span><span class="hl-reserved">class</span><span class="hl-code"> </span><span class="hl-identifier">RedShapeDecorator</span><span class="hl-code"> </span><span class="hl-reserved">extends</span><span class="hl-code"> </span><span class="hl-identifier">ShapeDecorator</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
 
   </span><span class="hl-reserved">public</span><span class="hl-code"> </span><span class="hl-identifier">RedShapeDecorator</span><span class="hl-brackets">(</span><span class="hl-identifier">Shape</span><span class="hl-code"> </span><span class="hl-identifier">decoratedShape</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
      </span><span class="hl-reserved">super</span><span class="hl-brackets">(</span><span class="hl-identifier">decoratedShape</span><span class="hl-brackets">)</span><span class="hl-code">;     
   </span><span class="hl-brackets">}</span><span class="hl-code">
 
   @</span><span class="hl-identifier">Override</span><span class="hl-code">
   </span><span class="hl-reserved">public</span><span class="hl-code"> </span><span class="hl-types">void</span><span class="hl-code"> </span><span class="hl-identifier">draw</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
      </span><span class="hl-identifier">decoratedShape</span><span class="hl-code">.</span><span class="hl-identifier">draw</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;         
      </span><span class="hl-identifier">setRedBorder</span><span class="hl-brackets">(</span><span class="hl-identifier">decoratedShape</span><span class="hl-brackets">)</span><span class="hl-code">;
   </span><span class="hl-brackets">}</span><span class="hl-code">
 
   </span><span class="hl-reserved">private</span><span class="hl-code"> </span><span class="hl-types">void</span><span class="hl-code"> </span><span class="hl-identifier">setRedBorder</span><span class="hl-brackets">(</span><span class="hl-identifier">Shape</span><span class="hl-code"> </span><span class="hl-identifier">decoratedShape</span><span class="hl-brackets">)</span><span class="hl-brackets">{</span><span class="hl-code">
      </span><span class="hl-identifier">System</span><span class="hl-code">.</span><span class="hl-identifier">out</span><span class="hl-code">.</span><span class="hl-identifier">println</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">Border Color: Red</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">;
   </span><span class="hl-brackets">}</span><span class="hl-code">
</span><span class="hl-brackets">}</span></div>
</div></div>
<h3>步骤 5</h3>
<p>使用 <i>RedShapeDecorator</i> 来装饰 <i>Shape</i> 对象。</p>

<div class="example"> 
<h2 class="example">DecoratorPatternDemo.java</h2> 
<div class="example_code">
<div class="hl-main"><span class="hl-reserved">public</span><span class="hl-code"> </span><span class="hl-reserved">class</span><span class="hl-code"> </span><span class="hl-identifier">DecoratorPatternDemo</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
   </span><span class="hl-reserved">public</span><span class="hl-code"> </span><span class="hl-types">static</span><span class="hl-code"> </span><span class="hl-types">void</span><span class="hl-code"> </span><span class="hl-identifier">main</span><span class="hl-brackets">(</span><span class="hl-identifier">String</span><span class="hl-brackets">[</span><span class="hl-brackets">]</span><span class="hl-code"> </span><span class="hl-identifier">args</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
 
      </span><span class="hl-identifier">Shape</span><span class="hl-code"> </span><span class="hl-identifier">circle</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">Circle</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
      </span><span class="hl-identifier">ShapeDecorator</span><span class="hl-code"> </span><span class="hl-identifier">redCircle</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">RedShapeDecorator</span><span class="hl-brackets">(</span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">Circle</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-brackets">)</span><span class="hl-code">;
      </span><span class="hl-identifier">ShapeDecorator</span><span class="hl-code"> </span><span class="hl-identifier">redRectangle</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">RedShapeDecorator</span><span class="hl-brackets">(</span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">Rectangle</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-brackets">)</span><span class="hl-code">;
      </span><span class="hl-comment">//</span><span class="hl-comment">Shape redCircle = new RedShapeDecorator(new Circle());</span><span class="hl-comment"></span><span class="hl-code">
      </span><span class="hl-comment">//</span><span class="hl-comment">Shape redRectangle = new RedShapeDecorator(new Rectangle());</span><span class="hl-comment"></span><span class="hl-code">
      </span><span class="hl-identifier">System</span><span class="hl-code">.</span><span class="hl-identifier">out</span><span class="hl-code">.</span><span class="hl-identifier">println</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">Circle with normal border</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">;
      </span><span class="hl-identifier">circle</span><span class="hl-code">.</span><span class="hl-identifier">draw</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
 
      </span><span class="hl-identifier">System</span><span class="hl-code">.</span><span class="hl-identifier">out</span><span class="hl-code">.</span><span class="hl-identifier">println</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-special">\n</span><span class="hl-string">Circle of red border</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">;
      </span><span class="hl-identifier">redCircle</span><span class="hl-code">.</span><span class="hl-identifier">draw</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
 
      </span><span class="hl-identifier">System</span><span class="hl-code">.</span><span class="hl-identifier">out</span><span class="hl-code">.</span><span class="hl-identifier">println</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-special">\n</span><span class="hl-string">Rectangle of red border</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">;
      </span><span class="hl-identifier">redRectangle</span><span class="hl-code">.</span><span class="hl-identifier">draw</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
   </span><span class="hl-brackets">}</span><span class="hl-code">
</span><span class="hl-brackets">}</span></div>
</div></div>
<h3>步骤 6</h3>
<p>执行程序，输出结果：</p>
<pre>
Circle with normal border
Shape: Circle

Circle of red border
Shape: Circle
Border Color: Red

Rectangle of red border
Shape: Rectangle
Border Color: Red
</pre>			<!-- 其他扩展 -->
						
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	<ol class="commentlist">
		<li class="comment even thread-even depth-1" id="comment-18379"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;周霆</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;598***063@qq.com</p></div><div id="runoobvote-id-18379" data-commid = "18379" class="upvotejs"><a class="upvote"></a> <span class="count">118</span></div></div><div class="comt-main" id="div-comment-18379"><p>一个更易理解的实例：</p>

<p>装饰模式为已有类动态附加额外的功能就像LOL、王者荣耀等类Dota游戏中，英雄升级一样。每次英雄升级都会附加一个额外技能点学习技能。具体的英雄就是ConcreteComponent，技能栏就是装饰器Decorator，每个技能就是ConcreteDecorator；</p>

<pre>//Component 英雄接口 
public interface Hero {
    //学习技能
    void learnSkills();
}
//ConcreteComponent 具体英雄盲僧
public class BlindMonk implements Hero {
    
    private String name;
    
    public BlindMonk(String name) {
        this.name = name;
    }

    @Override
    public void learnSkills() {
        System.out.println(name + "学习了以上技能！");
    }
}
//Decorator 技能栏
public class Skills implements Hero{
    
    //持有一个英雄对象接口
    private Hero hero;
    
    public Skills(Hero hero) {
        this.hero = hero;
    }

    @Override
    public void learnSkills() {
        if(hero != null)
            hero.learnSkills();
    }    
}
//ConreteDecorator 技能：Q
public class Skill_Q extends Skills{
    
    private String skillName;

    public Skill_Q(Hero hero,String skillName) {
        super(hero);
        this.skillName = skillName;
    }

    @Override
    public void learnSkills() {
        System.out.println("学习了技能Q:" +skillName);
        super.learnSkills();
    }
}
//ConreteDecorator 技能：W
public class Skill_W extends Skills{

    private String skillName;

    public Skill_W(Hero hero,String skillName) {
        super(hero);
        this.skillName = skillName;
    }

    @Override
    public void learnSkills() {
        System.out.println("学习了技能W:" + skillName);
        super.learnSkills();
    }
}
//ConreteDecorator 技能：E
public class Skill_E extends Skills{
    
    private String skillName;
    
    public Skill_E(Hero hero,String skillName) {
        super(hero);
        this.skillName = skillName;
    }

    @Override
    public void learnSkills() {
        System.out.println("学习了技能E:"+skillName);
        super.learnSkills();
    }
}
//ConreteDecorator 技能：R
public class Skill_R extends Skills{    
    
    private String skillName;
    
    public Skill_R(Hero hero,String skillName) {
        super(hero);
        this.skillName = skillName;
    }
    
    @Override
    public void learnSkills() {
        System.out.println("学习了技能R:" +skillName );
        super.learnSkills();
    }
}
//客户端：召唤师
public class Player {
    public static void main(String[] args) {
        //选择英雄
        Hero hero = new BlindMonk("李青");
        
        Skills skills = new Skills(hero);
        Skills r = new Skill_R(skills,"猛龙摆尾");
        Skills e = new Skill_E(r,"天雷破/摧筋断骨");
        Skills w = new Skill_W(e,"金钟罩/铁布衫");
        Skills q = new Skill_Q(w,"天音波/回音击");
        //学习技能
        q.learnSkills();
    }
}</pre>
<p>输出：</p>

<pre>学习了技能Q:天音波/回音击
学习了技能W:金钟罩/铁布衫
学习了技能E:天雷破/摧筋断骨
学习了技能R:猛龙摆尾
李青学习了以上技能！</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">周霆</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;周霆</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;598***063@qq.com</p></div></span>6年前 (2017-10-02)</div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-26360"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;该用户昵称违规</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;815***754@qq.com</p></div><div id="runoobvote-id-26360" data-commid = "26360" class="upvotejs"><a class="upvote"></a> <span class="count">14</span></div></div><div class="comt-main" id="div-comment-26360"><p>游戏里英雄皮肤的实现 是不是也比较适合装饰器模式</p>
<pre>public interface Hero {
    public void init();
}

public class victor implements Hero {
    @Override
    public void init() {
        System.out.println("维克托：输出型英雄 武器：步枪");
    }
}

public abstract class HeroDecorator implements Hero {
    private Hero heroDecorator;

    public HeroDecorator(Hero heroDecorator) {
        this.heroDecorator = heroDecorator;
    }

    @Override
    public void init() {
        heroDecorator.init();
    }
}

public class GalacticWarriors extends HeroDecorator {
    private Hero heroDecorator;

    public GalacticWarriors(Hero heroDecorator) {
        super(heroDecorator);
    }

    @Override
    public void init() {
        super.init();
        setSkin();
    }

    private void setSkin() {
        System.out.println("皮肤:银河战士套装");
    }
}

public class DecoratorPatternDemo {
    public static void main(String[] args) {
        Hero victor = new victor();
        GalacticWarriors galacticWarriors = new GalacticWarriors(victor);
        galacticWarriors.init();
    }
}</pre>
<div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">该用户昵称违规</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;该用户昵称违规</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;815***754@qq.com</p></div></span>5年前 (2018-04-16)</div></div></li><!-- #comment-## -->
<li class="comment even thread-even depth-1" id="comment-36667"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;郭为宇</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;gos***02009986@gmail.com</p></div><div id="runoobvote-id-36667" data-commid = "36667" class="upvotejs"><a class="upvote"></a> <span class="count">6</span></div></div><div class="comt-main" id="div-comment-36667"><p>《HeadFirst 设计模式》里的装饰器模式的代码。</p>

<pre>package HeadFirst设计模式.装饰者模式_星巴兹订单系统;
 
/**
 *区别于Shape，Beverage采用抽象类
 *通常装饰者模式是采用抽象类，但是在Java中可以使用接口
 */
public abstract class Beverage {
    public String description = "Unknown Beverage";
 
    public String getDescription() {
        return description;
    }
 
    public abstract double cost();
}</pre><pre>
package HeadFirst设计模式.装饰者模式_星巴兹订单系统.被装饰者;

import HeadFirst设计模式.装饰者模式_星巴兹订单系统.Beverage;
/**
 *被装饰类继承Beverage抽象类，最终会通过装饰者动态添加上新的行为
 */
public class DarkRoast extends Beverage {

    public DarkRoast() {
        description = "DarkRoast";
    }

    @Override    
    public double cost() {
        return 0.99;
    }
}</pre><pre>
package HeadFirst设计模式.装饰者模式_星巴兹订单系统.装饰者;
import HeadFirst设计模式.装饰者模式_星巴兹订单系统.Beverage;

/**
 *这是继承Beverage的抽象装饰者，接下来所有具体的装饰者都要继承CondimentDecorator
 */
public abstract class CondimentDecorator extends Beverage {

    /**     
     *所有的调料装饰者都必须重新实现该方法，因为调料的该方法应该得到扩充，方法实现不同于原来方法     
     */    
    public abstract String getDescription();

}</pre><pre>
package HeadFirst设计模式.装饰者模式_星巴兹订单系统.装饰者;

import HeadFirst设计模式.装饰者模式_星巴兹订单系统.Beverage;

/**
 *摩卡，是具体的装饰者
 *用一个实例变量记录饮料（被装饰者）
 *装饰者和被装饰者通过组合来增强功能，实现功能的扩展，用组合来替代继承
 */
public class Mocha extends CondimentDecorator {
    Beverage beverage;

    public Mocha(Beverage beverage) {
        this.beverage = beverage;
    }

    @Override    
    public String getDescription() {
        return beverage.getDescription() + ", Mocha";
    }

    @Override    
    public double cost() {
        return 0.20 + beverage.cost();
    }
}</pre>
<p>测试：</p>

<pre>package HeadFirst设计模式.装饰者模式_星巴兹订单系统;

import HeadFirst设计模式.装饰者模式_星巴兹订单系统.被装饰者.DarkRoast;
import HeadFirst设计模式.装饰者模式_星巴兹订单系统.装饰者.Mocha;


public class TestStarbuzzCoffee {
    public static void main(String[] args) {
        Beverage beverage1 = new DarkRoast();
        beverage1 = new Mocha(beverage1);
        beverage1 = new Mocha(beverage1);
        System.out.println(beverage1.getDescription()+ " $" + beverage1.cost());
    }
}</pre>
<p>输出：</p>

<pre>/Library/.../Java/设计模式/bin HeadFirst设计模式.装饰者模式_星巴兹订单系统.TestStarbuzzCoffee
DarkRoast, Mocha, Mocha $1.39

Process finished with exit code 0</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">郭为宇</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;郭为宇</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;gos***02009986@gmail.com</p></div></span>5年前 (2018-11-06)</div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-39940"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;这不是小明</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;xia***ng.chn@foxmail.com</p></div><div id="runoobvote-id-39940" data-commid = "39940" class="upvotejs"><a class="upvote"></a> <span class="count">39</span></div></div><div class="comt-main" id="div-comment-39940"><p><strong>复杂些的实例</strong></p>

<p>在《绝地求生：刺激战场》游戏里面我们都知道。</p>
<ul><li>
Kar 98K有5发子弹；</li><li>
装上弹匣后有10发子弹；</li><li>
装上4倍镜后可以进行4倍瞄准；</li><li>
装上8倍镜后可以进行4倍瞄准、8倍瞄准。</li></ul>
<p>枪具有开火功能：</p>

<pre>public interface Gun {
    /** * 开火直至打空子弹 */
    public void fire();
}

public class Kar98K implements Gun {
    @Override
    public void fire() {
        System.out.println("砰*5");
    }
}</pre>
<p>装饰上弹匣变更枪开火功能：</p>

<pre>public abstract class AbstractMagazine implements Gun {
    private Gun gun;

    public AbstractMagazine(Gun gun) {
        this.gun = gun;
    }

    @Override
    public void fire() {
        gun.fire();
    }
}

public class Magazine extends AbstractMagazine {
    public Magazine(Gun gun) {
        super(gun);
    }

    @Override
    public void fire() {
        System.out.println("砰*10");
    }
}</pre>

测试：
<pre>public class Demo {
    public static void main(String[] args) {
        System.out.println("[捡起一把98K]");
        Gun gun = new Kar98K();
        System.out.println("[开炮！]");
        gun.fire();
        System.out.println("[装饰上弹匣]");
        gun = new Magazine(gun);
        System.out.println("[开炮！]");
        gun.fire();
    }
}</pre>
<p>输出：</p>


<pre>[捡起一把98K]
[开炮！]
砰*5
[装饰上弹匣]
[开炮！]
砰*10</pre>
<p>现在我要装上4倍镜，使它具有4倍瞄准功能，这是枪支原本没有的功能。</p>

<p>扩展枪支接口功能：</p>
<pre>public interface Aim4X extends Gun {
    public void aim4X();
}

public abstract class AbstractTelescope4X implements Aim4X {
    private Gun gun;

    public AbstractTelescope4X(Gun gun) {
        this.gun = gun;
    }

    @Override
    public void fire() {
        gun.fire();
    }
}

public class Telescope4X extends AbstractTelescope4X {
    public Telescope4X(Gun gun) {
        super(gun);
    }

    @Override
    public void aim4X() {
        System.out.println("已进入4倍瞄准模式");
    }
}

/** * 55式4倍镜 */
public class Telescope4X55 extends AbstractTelescope4X {
    public Telescope4X55(Gun gun) {
        super(gun);
    }

    @Override
    public void aim4X() {
        System.out.println("4倍超级瞄准已部署");
    }
}</pre>
<p>测试：</p>
<pre>public class Demo {
    public static void main(String[] args) {
        System.out.println("[捡起一把98K]");
        Gun gun = new Kar98K();
        System.out.println("[装饰上4倍镜]");
        Aim4X aim4X = new Telescope4X(gun);
        System.out.println("[4倍瞄准]");
        aim4X.aim4X();
        System.out.println("[开炮！]");
        aim4X.fire();
        System.out.println("[先装饰上弹匣]");
        gun = new Magazine(gun);
        System.out.println("[再装饰上4倍镜]");
        aim4X = new Telescope4X(gun);
        System.out.println("[4倍瞄准]");
        aim4X.aim4X();
        System.out.println("[开炮！]");
        aim4X.fire();
        System.out.println("[人体描边？换上我的55式4倍镜]");
        aim4X = new Telescope4X55(gun);
        System.out.println("[4倍瞄准]");
        aim4X.aim4X();
        System.out.println("[开炮！]");
        aim4X.fire();
    }
}</pre>
<p>输出：</p>


<pre>[捡起一把98K]
[装饰上4倍镜]
[4倍瞄准]
已进入4倍瞄准模式
[开炮！]
砰*5
[先装饰上弹匣]
[再装饰上4倍镜]
[4倍瞄准]
已进入4倍瞄准模式
[开炮！]
砰*10
[人体描边？换上我的55式4倍镜]
[4倍瞄准]
4倍超级瞄准已部署
[开炮！]
砰*10</pre>
<p>现在我要装上8倍镜，它具有4倍瞄准功能，也具有8倍瞄准功能。</p>

<p>扩展接口：</p>
<pre>public interface Aim8X extends Aim4X {
    public void aim8X();
}

public abstract class AbstractTelescope8X implements Aim8X {
    private Gun gun;

    public AbstractTelescope8X(Gun gun) {
        this.gun = gun;
    }

    @Override
    public void fire() {
        gun.fire();
    }
}

public class Telescope8X extends AbstractTelescope8X {
    public Telescope8X(Gun gun) {
        super(gun);
    }

    @Override
    public void aim8X() {
        System.out.println("进入8倍瞄准模式");
    }

    @Override
    public void aim4X() {
        System.out.println("进入4倍瞄准模式");
    }
}</pre>
<p>测试：</p>
<pre>public class Demo {
    public static void main(String[] args) {
        System.out.println("[先装饰上弹匣]");
        gun = new Magazine(gun);
        System.out.println("[再装饰上8倍镜]");
        aim8X = new Telescope8X(gun);
        System.out.println("[8倍瞄准]");
        aim8X.aim8X();
        System.out.println("[敌人很近，换4倍]");
        aim8X.aim4X();
        System.out.println("[开炮！]");
        aim8X.fire();
    }
}</pre>

<p>输出：</p>


<pre>[先装饰上弹匣]
[再装饰上8倍镜]
[8倍瞄准]
进入8倍瞄准模式
[敌人很近，换4倍]</pre>

进入4倍瞄准模式

[开炮！]

砰*10<div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">这不是小明</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;这不是小明</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;xia***ng.chn@foxmail.com</p></div></span>4年前 (2019-02-20)</div></div></li><!-- #comment-## -->
<li class="comment even thread-even depth-1" id="comment-49188"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;Lonnie</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;354***093@qq.com</p></div><div id="runoobvote-id-49188" data-commid = "49188" class="upvotejs"><a class="upvote"></a> <span class="count">2</span></div></div><div class="comt-main" id="div-comment-49188"><p>Swift 实现:</p>



<pre>protocol Shape {
    func draw()
}

protocol ShapeDecorator: Shape {
    var decoratedShape: Shape { get }
}

class Decorator {
    struct Rectangle: Shape {
        func draw() {
            print("Shape: Rectangle")
        }
    }

    struct Circle: Shape {
        func draw() {
            print("Shape: Circle")
        }
    }

    struct RedShapeDecorator: ShapeDecorator {
        var decoratedShape: Shape

        func draw() {
            decoratedShape.draw()
            setRedBorder(decoratedShape)
        }

        func setRedBorder(_ shape: Shape) {
            print("Border Color: Red")
        }

    }
    func execute() {
        let circle = Circle()
        let redCircle = RedShapeDecorator(decoratedShape: Circle())
        let redRectangle = RedShapeDecorator(decoratedShape: Rectangle())
        print("Circle with normal border:")
        circle.draw()
        print("Circle of red border")
        redCircle.draw()
        print("Circle of red rectangle")
        redRectangle.draw()
    }
}</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">Lonnie</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;Lonnie</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;354***093@qq.com</p></div></span>3年前 (2019-12-11)</div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-51194"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;Siskin.xu</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;sis***@sohu.com</p></div><div id="runoobvote-id-51194" data-commid = "51194" class="upvotejs"><a class="upvote"></a> <span class="count">4</span></div></div><div class="comt-main" id="div-comment-51194"><p>Python 方式：</p>
<pre># Decorator Pattern with Python Code
from abc import  abstractmethod,ABCMeta

# 创建Shape接口
class Shape(metaclass=ABCMeta):
    @abstractmethod
    def draw(self):
        pass
# 实现Shape的实体类：Rectangle、Circle
class Rectangle(Shape):
    def draw(self):
        print("Shape: Rectangle")
class Circle(Shape):
    def draw(self):
        print("Shape: Circle")

# 创建实现了Shape接口的抽象装饰类ShapeDecorator类
class ShapeDecorator(Shape):
    _decoratedShape = None
    def __init__(self,inDecoratedShape):
        self._decoratedShape = inDecoratedShape
    def draw(self):
        self._decoratedShape.draw()

# 创建扩展了ShapeDecorator类的实体装饰类对象
class RedShapeDecorator(ShapeDecorator):
    def __init__(self,inDecoratedShape):
        ShapeDecorator.__init__(self,inDecoratedShape)
    def draw(self):
        self._decoratedShape.draw()
        self.setRedBorder(self._decoratedShape)
    def setRedBorder(self,inDecoratedShape):
        print("Border Color: Red")

# 调用输出
if __name__ == '__main__':
    aCircle = Circle()
    aRedCircle = RedShapeDecorator(Circle())
    aRedRectangle = RedShapeDecorator(Rectangle())

    print("Circle with normal border")
    aCircle.draw()
    print("\nCircle of red border")
    aRedCircle.draw()
    print("\nRectangle of red border")
    aRedRectangle.draw()</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">Siskin.xu</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;Siskin.xu</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;sis***@sohu.com</p></div></span>3年前 (2020-03-03)</div></div></li><!-- #comment-## -->
<li class="comment even thread-even depth-1" id="comment-70025"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;lz</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;luz***1226@126.com</p></div><div id="runoobvote-id-70025" data-commid = "70025" class="upvotejs"><a class="upvote"></a> <span class="count">1</span></div></div><div class="comt-main" id="div-comment-70025"><p><strong>C++语言</strong></p>

<pre>/*
练习：修饰模式。 
业务：处理日志字符串，关键词屏蔽(业务上显然这个要优先处理)、日期添加
*/
// 字符串父类
class Text
{
public:
    Text() {};
    virtual void setText(string t) = 0;
    virtual string getText() = 0;
};

// 字符串实现
class NormalText : public Text
{
private:
    string m_string;
public:
    NormalText() {};
    virtual void setText(string t) {
        cout &lt;&lt; "NormalText中存储字符串"&lt;&lt; endl;
        m_string = t;
    };
    string getText() {
        return m_string;
    };
};

// 字符串修饰器
class TextDecorator : public Text
{
private:
    shared_ptr&lt;Text&gt; m_text;
public:
    TextDecorator() {};
    void Decorate(shared_ptr&lt;Text&gt; &amp; text) {
        m_text = text;
    }
    string getText() {
        return m_text-&gt;getText();
    };
    virtual void setText(string t) {
        m_text-&gt;setText(t);
    };
};

// 字符串修饰器具体：关键词屏蔽  
class TextDecorator_blockword : public TextDecorator
{
private:
    string m_blockword; // 屏蔽词
public:
    TextDecorator_blockword(string bw) :m_blockword(bw) {};
    void setText(string s) {
        cout &lt;&lt; "屏蔽词语，屏蔽词为 "&lt;&lt; m_blockword &lt;&lt; endl;
        // 循环找到每个屏蔽词，并替换为*
        for (std::size_t found = s.find(m_blockword); 
            found != std::string::npos; 
            found = s.find(m_blockword)) {
            s.replace(found, m_blockword.size(), m_blockword.size(), '*'); // 屏蔽词替换成*号
        }
        TextDecorator::setText(s);
    };
};

// 字符串修饰器具体：时间添加
class TextDecorator_addtime : public TextDecorator
{
public:
    TextDecorator_addtime() {};
    void setText(string s) {
        cout &lt;&lt; "添加时间戳" &lt;&lt; endl;
        s = (string)"[2022-2-22 22:22:22] " + s;
        TextDecorator::setText(s);
    };
};

// main 中执行
void decorator_pattern_v2()
{
    // 字符串
    string s("what a stupid son of a bitch. --- JoeBiden January,2022");
    // 原始字符创类
    shared_ptr&lt;Text&gt; text((Text*)(new NormalText()));
    // 创建修饰器  
    shared_ptr&lt;Text&gt; addtime((Text*)(new TextDecorator_addtime())); // 增加时间戳
    shared_ptr&lt;Text&gt; blk_bitch((Text*)(new TextDecorator_blockword("bitch"))); // 屏蔽 bitch
    shared_ptr&lt;Text&gt; blk_jb((Text*)(new TextDecorator_blockword("22"))); // 屏蔽 22
    // 加载修饰器
    dynamic_cast&lt;TextDecorator_addtime*&gt;(addtime.get())-&gt;Decorate(text);
    dynamic_cast&lt;TextDecorator_blockword*&gt;(blk_bitch.get())-&gt;Decorate(addtime);
    dynamic_cast&lt;TextDecorator_blockword*&gt;(blk_jb.get())-&gt;Decorate(blk_bitch);
    blk_jb-&gt;setText(s);
    cout &lt;&lt; "原始字符串：" &lt;&lt; s &lt;&lt; endl;
    cout &lt;&lt; "处理后字符串：" &lt;&lt; text-&gt;getText() &lt;&lt; endl;
}</pre><p>
控制台输出：</p>

<pre>屏蔽词语，屏蔽词为 22
屏蔽词语，屏蔽词为 bitch
添加时间戳
NormalText中存储字符串
原始字符串：what a stupid son of a bitch. --- JoeBiden January,2022
处理后字符串：[2022-2-22 22:22:22] what a stupid son of a *****. --- JoeBiden January,20**</pre><p>
注意！ 修饰器的顺序很重要，如果错误，则时间戳里的22字符创也会被屏蔽！</p><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">lz</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;lz</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;luz***1226@126.com</p></div></span>1年前 (2022-02-01)</div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-75226"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;TooHandsomeException</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;ywt***@163.com</p></div><div id="runoobvote-id-75226" data-commid = "75226" class="upvotejs"><a class="upvote"></a> <span class="count">0</span></div></div><div class="comt-main" id="div-comment-75226"><p>老旧小区居民楼安装电梯：</p>

<pre>// BuildingInterface.java
public interface BuildingInterface {
    void build();
}
// Building.java
public class Building implements BuildingInterface {
    @Override
    public void build() {
        System.out.println("修建楼房");
    }
}
// BuildingDecorator.java
public abstract class BuildingDecorator implements BuildingInterface {
    protected BuildingInterface building;

    public BuildingDecorator(BuildingInterface building) {
        this.building = building;
    }

    @Override
    public void build() {
        building.build();
        addDecorate();
    }

    protected abstract void addDecorate();
}
// Elevator.java
public class Elevator extends BuildingDecorator {
    public Elevator(BuildingInterface building) {
        super(building);
    }

    @Override
    public void addDecorate() {
        System.out.println("加装电梯");
    }
}
// Demo.java
public class Demo {
    public static void main(String[] args) {
        Building building = new Building();
        Elevator elevator = new Elevator();
        elevator.build();
    }
}</pre>
<p>输出：</p>

<pre>修建楼房
加装电梯</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">TooHandsomeException</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;TooHandsomeException</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;ywt***@163.com</p></div></span>7个月前 (09-14)</div></div></li><!-- #comment-## -->
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	 // upload: {url:'/api/comment_upload_file.php',params: null,fileKey: 'upload_file',connectionCount: 1,leaveConfirm: '文件正在上传，您确定离开?'},
	  defaultImage: 'https://www.runoob.com/images/logo.png',
	  codeLanguages: '',
	  autosave: 'editor-content',
	  toolbar: [  'bold','code','ul','ol','image' ]
	});
	editor.on('selectionchanged', function() {
		$(".code-popover").hide();
	});

	// 提交数据
	$("#share_code").click(function() {
		$(".comment-signarea").hide();
		$("#commentform").show();
		
	});
	$("#user_add_note").click(function() {
		$(".comment-signarea").hide();
		$("#commentform").show();
		$('html, body').animate({
       	    scrollTop: $("#respond").offset().top
    	}, 200);
	});

	// 提交笔记
	var commentform=$('#commentform');
	commentform.prepend('<div id="comment-status" style="display:none;" ></div>');
	var statusdiv=$('#comment-status');
	
	commentform.submit(function(e){
		e.preventDefault();
		var noteContent = editor.getValue();
		// console.log(noteContent);
		noteContent = noteContent.replace(/<pre><code>/g,"<pre>");
		noteContent = noteContent.replace(/<\/code><\/pre>/g,"</pre>");
		
		// 系列化表单数据
		var comment_parent = 0;
		var is_user_logged_in = $("#is_user_logged_in").val();
		var comment_post_ID =  8915;
		var _wp_unfiltered_html_comment = $("#_wp_unfiltered_html_comment").val();
		var comment = noteContent;
		var author = $("#author").val();
		var url = $("#url").val();
		var email = $("#email").val();
		if(isBlank(author) && is_user_logged_in==0) {
			statusdiv.html('<p  class="ajax-error">请输入昵称！</p>').show();
		} else if(isBlank(email)  && is_user_logged_in==0) {
			statusdiv.html('<p  class="ajax-error">请输入邮箱！</p>').show();
		} else {
			// var formdata=commentform.serialize() + "&comment=" + noteContent ;
			// 添加状态信息
			statusdiv.html('<p>Processing...</p>').show();
			// 获取表单提交地址
			var formurl=commentform.attr('action');
			
			// 异步提交
			$.ajax({
					type: 'post',
					url: formurl,
					dataType:'json',
					data: {"comment_parent":comment_parent,"comment_post_ID":comment_post_ID, "_wp_unfiltered_html_comment":_wp_unfiltered_html_comment,"comment":comment,"url":url, "email":email,"author":author},
					error: function(XMLHttpRequest, textStatus, errorThrown){
					statusdiv.html('<p class="ajax-error" >数据不完整或表单提交太快了！</p>').show();
				},
				success: function(data, textStatus){
					if(data.errorno=="0") {
						$("#submit").prop('disabled', true);
						statusdiv.html('<p class="ajax-success" >笔记已提交审核，感谢分享笔记！</p>').show();
						alert('笔记已提交审核，感谢分享笔记！');
					}else{
						statusdiv.html('<p class="ajax-error" >'+data.msg+'</p>').show();
					}
					commentform.find('textarea[name=comment]').val('');
				}
			});
			setTimeout(function(){
		        $("#submit").prop('disabled', false);
		    }, 10*1000);
		}
		return false;

	});
	$(".comt-author").click(function() {
		href = $(this).children("a").attr("href");
		if(href.indexOf("/note/")!=-1) {
			var win = window.open(href, '_blank');
  			win.focus();
		}
	});
	$(".comt-meta span").hover(function(){
		$(this).children(".tooltip").css({ "opacity": 1, "pointer-events": "auto"});
	},function(){
		$(this).children(".tooltip").removeAttr("style");
	});
	/*
	$(".wrapper i").hover(function(){
		$(this).siblings(".tooltip").css({ "opacity": 1, "pointer-events": "auto"});
	},function(){
		$(this).siblings(".tooltip").css({ "opacity": 0, "pointer-events": "auto"});
	});
	*/
	//Upvote.create('runoobvote-id', {callback: vote_callback});
	var ajaxurl = 'https://www.runoob.com/wp-admin/admin-ajax.php';
	var callback = function(data) {
		//console.log($('#runoobvote-id').upvote('upvoted'));
		//console.log($('#runoobvote-id').upvote('downvoted'));
		//console.log(data);
		_vote_action = data.action;
		id_arr = data.id.split('-');
		um_id= id_arr[2];
		//console.log(um_id);
		
		var re = /^[1-9]+/;
		if (re.test(um_id)) { 
			var ajax_data = {
				_vote_action: _vote_action,
				action: "pinglun_zan",
				um_id: um_id,
				um_action: "ding"
			};
			//console.log(ajax_data);
			$.post(ajaxurl,ajax_data,function(status){
				//if(status.vote_num>999) {
				//	_voteHtml = '<span style="display: block; text-align: center;font-size: 20px; color: #6a737c; margin: 8px 0;">'+kFormatter(status.vote_num) +'</span>';
				//	$("#runoobvote-id-" + um_id + " .count").hide().after(_voteHtml);
				//}
				
			});
		}
	};
	if($('#comments').length && $('.upvotejs').length){
		$('.upvotejs').upvote({id: 8915, callback: callback});
	
		$.post(ajaxurl,{"action":"pinglun_zan","postid":8915},function(data){  
			$(data).each(function(key,value) {
				$("#runoobvote-id-" + value.commid + " .upvote").addClass(value.upvotejs_class);
				$("#runoobvote-id-" + value.commid + " .downvote").addClass(value.downvote_class);
				$("#runoobvote-id-" + value.commid + " .count").text(value.upvote_count);
			})
		},'json');
		
	}
	
	
});
function isBlank(str) {
    return (!str || /^\s*$/.test(str));
}
function kFormatter(num) {
	// return num;
    return Math.abs(num) > 999 ? Math.sign(num)*((Math.abs(num)/1000).toFixed(1)) + 'k' : Math.sign(num)*Math.abs(num)
}

</script>

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